Improvement in turn-tables for sewing-machines



2 Sheets-Sheet 2.

E. MOREAU. Turn-Table for Sewing-Machine.

No. 206,035. Patented July 16, 1878.

WITNESSES I 6K WVENTOR I ATTORIEYJ.

MPETERS, FNOTOLITHOGRAPHER. WASHINGTON D O.

UNITED- Sunnis PATENT ()FFIOE.

EUGENE MOREAU, OF SAN FRANOISOO, CALIFORNIA, ASSIGNOR TO MOREAU MACHINEMAlSlUFAOTURING COMPANY, OF SAME PLACE.

IMPROVEMENT lN TURN-TABLES FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 206,035, dated July 16,1878; application filed October 10, 1877.

To all whom it may concern:

Be it known that I, EUGENE MOREA'U, of the city and county of SanFrancisco, in the State of California, have invented a new and usefulImprovement in Turn-Tables for Sewing-Machines, which invention is fullyset forth in the following specification and accompanying drawings.

In the said drawing, Figure 1 is a top or plan view of the bed-plate ofa sewing-machine with my improved shuttle-race turntable appliedthereto. Fig. 2 is a vertical section through the line .70 y, Fig. 1,the supporting-bracket being shown in full lines. Fig. 3 is an enlargeddetail view of the needle-bar and bushing. Fig. 4 is a side elevation,with the bed-plate and table in section, showing means for reciprocatingthe shuttle.

My invention relates more particularly to that class of sewing machinesdesigned to work button-holes, embroider, &c.; and it has for its objectto provide a means for changing the direction of the movement of theshuttle and the line of sewing to any desired angle from its normalposition.

It consists in the combination, with the bedplate in a sewing-machine,of a circular turntable let into a recess or opening in the bed- ,plateof corresponding form, and having in it the shuttle-race, in which theshuttle is carried by suitable mechanism operated from beneath thebed-plate, the said turn-table being connected in any proper manner withthe needlebar of the machine to cause them both to turn simultaneouslywith each other and in the same direction, for the purpose of keepingthe loop of needle-thread always in the same position with respect tothe shuttle-race, or at right angles with the travel of the shuttle, aswill be more fully described and set forth hereinafter.

Referring to the accompanying drawing, A represents the bed-plate,having a circular recess or opening cut into it to receive the circular.turn-table B, which is arranged to turn freely within it upon thespindle a. The end of this spindle is held in a suitable bearing uponthe frame or bracket 0, secured to the under side of the bed-plate.

The shuttle-race b is cut in the top of the turn-table B, diametricallyacross it, in proper position with the need le-hole, so that the pointof the needle and the shuttle shall work closely together to insure theloop of needle-thread being always caught by the nose of the shuttle.The needle and needle-bar are situated in the center of the turn-table.

The arm of the machine has a bushing, c, which holds the needle-bar, andis connected with the turn -table B, and caused to turn therewith bymeans of the brace d, secured to the turn-table at the circumference andto the end of the bushing c, and within this bushing the needle-bar D isheld and actuated, it being rotated at the same time with the bushing bymeans of aspline, e, on the bushing, which works in a groove cut in theneedle-bar. Thus, while the needle bar is free to reciprocate within thebushing, it is caused to turn with the turn-table B by means of thebrace or connection 01, whereby the position of the bow or loop ofneedle-thread is always kept at right angles to the line of theshuttle-race as the turn-table is rotated, and the point of the shuttleis always in position to take the loop from the needle.

This construction and application of a turntable is designed moreespecially for use in button hole sewing machines wherein the work isheld and presented to the sewing mechanism by afeeding-clamp, and itenables the stitches to be laid always perpendicularly or at rightangles to the edge of the buttonhole.

In Fig. 4 is shown the mechanism for movin g the shuttle when theturn-table is in any position. Upon the spindle a of the turn-table isfitted a sliding collar, E, provided with flanges e. The collar isreciprocated vertically upon the spindle by means of a horizontal lever,F, which works between two of the flanges e, and is fulcrumed at f upona hanger depending from the bed-plate A. The vertical arm F of thislever is moved, through an arm, 9, by an eccentric upon the maindrivingshaft h. Thus the collar can be moved up and down in whateverposition the turn-table may be. This movement is converted into ahorizontal reciprocation and transmitted to the shuttle-carrier i bymeans of the elbow-lever G, having its fulcrum at I; on a bracket orpendant, H, fixed to the under side of the turn-table.

The horizontal arm of the lever G works between two flanges on thecollar, while its vertical arm is connected to the shuttle-carrier, sothat, as the collar moves up and down upon the spindle, it produces arocking motion of the lever G and gives a horizontal motion to theshuttle-carrier.

The pendant H, being fixed to the under side of the turn-table, causesthe lever (l and its connection with the shnttle'carrier to turn withthe turn-table around the central spindle, and thus to always maintainthe same position with respect to the shnttlerace, while the horizontalarm of the lever G, being always retained between the flanges on thecollar, allows the shuttle to be operated at all times, even when theturn-table is being rotat-ed.

Having thus fully described my invention,

what I claim as new therein, and desire to secure by Letters Patent, is-

1. In combination with a sewing-machine frame or bed-plate, a circularturn-table, B, having a shuttle-race cut therein diametrically acrossit, and arranged to turn within a recess or opening in the bed-plate,whereby the shuttle-race and its shuttle may be turned at any desiredangle across the bed-plate, sub stantially as herein set forth anddescribed.

2. In a sewing-machine, the turn-table B, having a shuttle-race, incombination with the movable needle-bushing, connected, substantially asdescribed, to the said turn-table, so as to turn therewith, for thepurpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand andseal this 24th day of September. 1877.

EUGENE MOREAU. [L. s.]

Witnesses (7. W. M. SMITH, EDWARD I). ()SBORN.

